Rear wheel horsepower, How much should I have |
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
Rear wheel horsepower, How much should I have |
porschefile2010 |
Apr 24 2013, 01:41 AM
Post
#1
|
Member Group: Members Posts: 228 Joined: 26-May 11 From: Whangaparaoa, New Zealand Member No.: 13,118 Region Association: Australia and New Zealand |
So, we finally have the rebuilt engine back in the car and we decided to tune it on a "rolling road" to make sure we got the mixture right.
So this is a 75 2.0 with standard FI and no emmissions gear on it. I had sort of hoped for around 75hp at the wheels but it has come out at 57hp rwhp. Engine has new AA pistons and cylinders and the standard 2.0 heads so does this sort of number sound right and if it's way short what could be the problem. Also, will it get better as the new pistons settle in. I go get the car on Friday so will put some pics up then |
porschefile2010 |
Apr 25 2013, 01:44 AM
Post
#2
|
Member Group: Members Posts: 228 Joined: 26-May 11 From: Whangaparaoa, New Zealand Member No.: 13,118 Region Association: Australia and New Zealand |
I thought I had read that the early 2.0's put out around 95 at the crank and the later ones something like 80. I know there are differrent measure of bhp and I am not sure which one the books refer to but I suspect it would be SAE. So if it is 80 at the crank and I have 57 at the wheels we are in the ballpark with potential for it to improve as the engine runs in.
Not big numbers though are they ? |
Dave_Darling |
Apr 25 2013, 04:00 PM
Post
#3
|
914 Idiot Group: Members Posts: 15,000 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California |
I thought I had read that the early 2.0's put out around 95 at the crank and the later ones something like 80. I know there are differrent measure of bhp and I am not sure which one the books refer to but I suspect it would be SAE. 73-74 2.0, US spec: 95 DIN HP 73-74 2.0, European spec: 100 DIN HP 75-76 2.0, US spec: 88 DIN HP Note that all are DIN ratings. I don't think I've seen specifically what the 75-76 European 2.0s made. The difference between the US and European spec for the 73-74 2.0 cars was: 7.6:1 compression versus 8.0:1 compression. That's it. The 75-76 US-spec cars had the 7.6:1 compression, and also had the nasty late-style exhaust, with or without catalyst. --DD |
Lo-Fi Version | Time is now: 26th June 2024 - 05:55 AM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |